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Finding the Fourth Proportional to 3,436.68, 5,155.02 and 1,974.90

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Solution

The fourth proportional to 3,436.68, 5,155.02 and 1,974.90 is: 2,962.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,436.68 : 5,155.02 = 1,974.90 : x
  2. Step 2: Convert to fraction form
    3,436.68/5,155.02 = 1,974.90/x
  3. Step 3: Cross multiply
    3,436.68x = 5,155.02 × 1,974.90
  4. Step 4: Simplify right side
    3,436.68x = 10,180,639.12
  5. Step 5: Solve for x
    x = 10,180,639.12/3,436.68
  6. Step 6: Final answer
    x = 2,962.35

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.